Porta Turrionis

The Porta Turrionis, also known as the Porta Cavalleggeri, was one of the Leonine Walls constructed by Pope Leo IV in 848.

History
Constructed sometime between 848 and 1455, the Porta Turrionis was so named because it stood next to a tower (turrionis) built by Pope Nicholas V. The location of the gate at the entrance to the Vatican City was enlarged for cars in 1990, and the original was moved several meters to the side and permanently closed; Pope John Paul II renamed it the Porta Cavalleggeri.